CN204175211U - Automatic grouting control system - Google Patents

Abstract

The utility model discloses an automatic grouting control system, which comprises a grouting pump, a mud pump, a low-pressure return valve, a low-pressure return pipeline, a high-pressure valve, a mud tank, a function valve, a grouting valve, a pressure relief valve, a grouting pipeline, a backflow Groove, shaft, sealer, flow rate sensor, bell mouth, grouting pump control cabinet, check valve, suspension weight sensor, winch, winch sensor, hydraulic tongs, liquid inlet and outlet, breakout sensor, make-up Transducers, risers, stand pressure transducers, primary pipelines, drilling tools and cables. The utility model automatically judges the tripping conditions, and accurately calculates the number of tripping tools and the amount of grout, and timely judges whether there is a well kick or leakage, and can choose automatic or manual grouting. It has fast response speed, high reliability, and High maintainability and other advantages.

Description

Automatic Grouting Control System

technical field

The utility model relates to an automatic grouting control system.

Background technique

In the process of oil and gas drilling, blowout and lost circulation are catastrophic accidents, and the main cause of blowout is that the liquid column pressure in the wellbore cannot balance the bottom pressure, causing formation fluid to enter the wellbore, ranging from overflow to blowout. When pulling out the drilling tool, the liquid level in the wellbore drops, and the upward drilling bit forms a certain suction pressure at the bottom of the well, causing the bottomhole pressure to drop. In order to maintain the pressure balance, grouting must be grouted into the wellbore in time, otherwise it will be easy Kick accidents occur; the main cause of lost circulation is that during the drilling process, drilling fluid or other media (cementing slurry, etc.) in the wellbore leak into the formation pores, cracks and other spaces. , Lost circulation will lead to pressure drop in the wellbore, affecting normal drilling, causing wellbore instability or collapse, inducing formation fluid to pour into the wellbore, and seriously causing blowout.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art, provide an automatic grouting control system, and solve the problems that the existing grouting technology cannot realize automatic continuous grouting and real-time monitoring of well kick and leakage.

The purpose of this utility model is achieved through the following technical proposals: an automatic grouting control system, which includes a grouting pump, a mud pump, a low-pressure return valve, a low-pressure return pipeline, a high-pressure valve, a mud tank, a function valve, a grouting valve, a drain Pressure valve, grouting pipeline, return tank, wellbore, well sealing device, flow rate sensor, bell mouth, grouting pump control cabinet, one-way valve, suspension load sensor, winch, winch sensor, hydraulic tongs, liquid inlet and outlet , shackle sensor, make-up sensor, riser, vertical pressure sensor, first pipeline, drilling tool and cable, the mud pump is connected with the first inlet of the mud tank through the low-pressure return water pipeline, and the low-pressure return water The valve is set on the low-pressure return water pipeline, and the mud pump is also connected to the grouting pipeline through the high-pressure valve, the grout valve and the pressure relief valve in turn, and the mud pump is also connected to the standpipe through the high-pressure valve and the function valve in turn. The vertical pressure sensor is arranged on the standpipe, the grouting pump is arranged on the mud tank, the grouting pump is connected with the grouting pump control cabinet, and the first outlet of the mud tank is connected to the mud pump through the first pipeline. connected, the second outlet of the mud tank is connected to the wellbore through a one-way valve and a grouting pipeline in turn. There is a bell mouth at the top of the wellbore, a flow rate sensor is set at the bell mouth, and a flow rate sensor is set below the bell mouth. There is a backflow tank connected to the second inlet of the mud tank, the backflow tank is above the grouting pipeline, the wellbore is provided with a sealer, the drawworks is connected to the top of the drilling tool through a cable, and the drawworks The sensor is set on the winch, the cable is set with a suspension load sensor, the drilling tool is set with a hydraulic tong, and the liquid inlet and outlet of the hydraulic tong are set with a shackle sensor and an upper buckle sensor.

The automatic grouting control system also includes an acousto-optic indication module, the acousto-optic indication module includes pressure relief valve feedback indication, sensor status indication, overflow alarm indication, well leakage alarm indication and slurry return indication, the acousto-optic indication The modules are respectively connected with the pressure relief valve, the flow rate sensor, the suspension load sensor, the winch sensor, the breakout sensor, the make-up sensor and the standing pressure sensor.

The automatic grouting control system also includes a parameter setting module, the parameter setting module includes grouting time setting, grouting amount setting, grouting injection number setting, grouting liquid level setting, displacement setting, traveling block height setting, empty hook suspension weight Setup and grout interval settings.

The grouting pump control cabinet is provided with a touch screen.

The automatic grouting control system also includes a regulated power supply for the normal operation of field sensors.

The beneficial effects of the utility model are: (1) the utility model automatically judges the working conditions of tripping, and accurately calculates the number of tripping tools and the amount of mud replenishment, and timely judges whether there is well kick or leakage; (2) the utility model According to the setting, the grouting system is automatically turned on for timely and effective grouting, and manual mode can also be used; (3) The communication between the modules of the utility model is direct, so the system responds quickly; (4) Between the various components on site They are all independent operations, so they have good reliability. After the sensor fails, it will send out an alarm message. After the engineering and technical personnel repair and replace it, the system will automatically detect and go back online; (5) The system has good maintainability , as long as the communication lines and various sensors do not fail, the system can normally perform automatic grouting operations and well kick and leak judgments.

Description of drawings

Fig. 1 is a structural diagram of the utility model;

Figure 2 is a functional block diagram of the sound and light indicating module;

Fig. 3 is a functional block diagram of the parameter setting module;

In the figure, 1-grouting pump, 2-mud pump, 3-low pressure return valve, 4-low pressure return pipeline, 5-high pressure valve, 6-mud tank, 7-function valve, 8-grouting valve, 9-drain Pressure valve, 10-grouting pipeline, 11-reflux tank, 12-wellbore, 13-sealing device, 14-flow sensor, 15-horn mouth, 16-grouting pump control cabinet, 17-one-way valve, 18-suspension weight Sensors, 19-Winch, 20-Winch sensor, 21-Hydraulic tongs, 22-Liquid inlet and outlet, 23-Shackle sensor, 24-Make-up sensor, 25-Standpipe, 26-Stand pressure sensor, 27-first pipeline, 28-drilling tool, 29-cable.

Detailed ways

The technical scheme of the utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following description.

As shown in Figure 1, the automatic grouting control system includes a grouting pump 1, a mud pump 2, a low-pressure return valve 3, a low-pressure return pipeline 4, a high-pressure valve 5, a mud tank 6, a function valve 7, a grouting valve 8, and a drain valve. Pressure valve 9, grouting pipeline 10, return tank 11, wellbore 12, well sealing device 13, flow rate sensor 14, bell mouth 15, grouting pump control cabinet 16, one-way valve 17, suspension weight sensor 18, winch 19, winch sensor 20 , hydraulic tongs 21, liquid inlet and liquid outlet 22, breakout sensor 23, make-up sensor 24, standpipe 25, vertical pressure sensor 26, first pipeline 27, drilling tool 28 and cable 29, described mud The pump 2 is connected to the first inlet of the mud tank 6 through the low-pressure return pipeline 4, the low-pressure return valve 3 is arranged on the low-pressure return pipeline 4, and the mud pump 2 passes through the high-pressure valve 5 and the grouting valve in sequence. 8 and the pressure relief valve 9 are connected to the grouting pipeline 10, and the mud pump 2 is also connected to the standpipe 25 through the high pressure valve 5 and the function valve 7 in turn, and the vertical pressure sensor 26 is arranged on the standpipe 25, and the The mud tank 6 is provided with a grout pump 1, the grout pump 1 is connected to the grout pump control cabinet 16, the first outlet of the mud tank 6 is connected to the mud pump 2 through the first pipeline 27, and the mud The second outlet of the tank 6 is sequentially connected to the wellbore 12 through the one-way valve 17 and the grouting pipeline 10. The top of the wellbore 12 has a bell mouth 15, and the bell mouth 15 is provided with a flow rate sensor 14. The bell mouth 15 is provided with a return tank 11 connected to the second inlet of the mud tank 6, the return tank 11 is above the grouting pipeline 10, the wellbore 12 is provided with a sealer 13, and the drawworks 19 is connected by a cable 29 is connected to the top of the drilling tool 28, the winch sensor 20 is arranged on the winch 19, the suspended load sensor 18 is arranged on the cable 29, the hydraulic tongs 21 are arranged on the drilling tool 28, and the A breakout sensor 23 and a make-up sensor 24 are provided on the liquid inlet and the liquid outlet 22 of the hydraulic tongs 21 .

As shown in Figure 2, the automatic grouting control system also includes an acousto-optic indication module, which includes pressure relief valve 9 feedback indication, sensor status indication, overflow alarm indication, well leakage alarm indication and slurry return indication , the acousto-optic indicating module is respectively connected with the pressure relief valve 9, the flow rate sensor 14, the suspension weight sensor 18, the winch sensor 20, the shackle sensor 23, the make-up sensor 24 and the standing pressure sensor 26.

As shown in Figure 3, the automatic grouting control system also includes a parameter setting module, and the parameter setting module includes grouting time setting, grouting amount setting, grouting injection number setting, grouting liquid level setting, displacement setting, travel height setting, empty hook weight setting and grouting interval setting.

The grouting pump control cabinet 16 is provided with a touch screen.

The automatic grouting control system also includes a regulated power supply for the normal operation of field sensors.

As shown in Figure 1, when the drill is pulled out, the pressure of the standpipe 25 tends to zero. During the process of grout replenishment using the mud pump 2, the low-pressure return valve 3 and the high-pressure valve 5 are opened, the function valve 7 is closed, and the grouting valve 8 is closed. Open, the mud flows back to the mud tank 6 through the low pressure return line 4. If you press the large pump on the touch screen interface to replenish grout, at this time, the pressure relief valve 9 opens, and part of the mud passes through the high pressure valve 5—the grouting valve 8—the pressure relief valve 9—the grouting pipeline 10 is poured from the bottom of the return tank 11 In the wellbore 12, the flow rate sensor 14 detects in real time whether the liquid level reaches the bell mouth, and displays the liquid level height in the wellbore 12 in real time on the touch screen. Just press the stop pressure release button on the interface to close the pressure relief valve 9 and stop grouting .

When not using the mud pump 2 for grouting, the system uses the grouting pump 1 for grouting. The system can select manual or automatic gears on the control cabinet. When the manual gear is in the grouting state, the grouting pump 1 is always on for grouting, just switch the switch Stop; when in automatic gear, it is completely processed by the set data (set by the parameter setting module) to determine whether to grout, when to grout, how much to grout, etc. Press the automatic grouting button for the first time (it cannot be opened when there is vertical pressure), the flow rate sensor 14 detects the liquid level, and when the set height is not reached, the automatic grouting is turned on, and the mud is poured from the bottom of the return tank 11 through the check valve 17-the grouting pipeline 10 In the wellbore 12, the grouting pump 1 automatically stops after reaching the set liquid level and returns to the grout in the reflux tank 11, waiting for the next operation. , the grouting pump 1 is turned on, and the mud is poured into the wellbore 12 from the bottom of the backflow tank 11 through the check valve 17-the grouting pipeline 10, to achieve the effect of balancing the formation pressure, and the backflow tank 11 stops automatically after seeing the slurry. During the tripping process, if the set number of drilling tools 28 is not pulled out within the set time, the system will also start automatic grouting, and grouting until the grout returns, effectively preventing the occurrence of well kick and lost circulation. When using the grout pump 1 to grout, the pressure relief valve 9 must be closed by first pressing the stop pressure relief button.

1-grouting pump, 2-mud pump, 3-low pressure return valve, 4-low pressure return line, 5-high pressure valve, 6-mud tank, 7-function valve, 8-grouting valve, 9-pressure relief valve, 10-grouting pipeline, 11-reflux tank, 12-wellbore, 13-sealing device, 14-flow rate sensor, 15-bell mouth, 16-grouting pump control cabinet, 17-one-way valve, 18-suspension weight sensor, 19 -Winch, 20-Winch sensor, 21-Hydraulic tongs, 22-Inlet and outlet, 23-Shackle sensor, 24-Make-up sensor, 25-Standpipe, 26-Stand pressure sensor, 27-No. One pipeline, 28-drilling tool, 29-cable

When running in, the flow rate sensor 14 will continue to detect the slurry return signal in the return tank 11 under normal circumstances. When the flow rate sensor 14 still detects the liquid level signal after stopping the run in, the system will send out an audible and visual alarm message for well kick. , to facilitate technical personnel to take timely and effective processing measures. When drilling normally, the flow rate sensor 14 will always detect the liquid level signal. When a lost circulation occurs, the flow rate sensor 14 fails to detect the liquid level signal, and the return tank 11 does not see slurry for a long time. At this time, the system will also detect the liquid level signal Whether the tool 28 number reaches the set value or not, the automatic grouting will be turned on after reaching the set value, and the grouting will continue until the grouting is returned. If the grouting time reaches the set time and the grouting signal is not detected, the system will prompt a leak alarm and continue grouting.

The tripping and tripping process and the number of tripping tools 28 in the whole process are jointly judged by the suspension weight sensor 18, the winch sensor 20, the breakout sensor 23 and the make-up sensor 24 of the liquid inlet and outlet of the hydraulic tongs, and the system It also provides two modes of metered grouting and timed grouting. The system calculates the number of drilling tools 28 lifted out, calculates the displacement, compares the amount of grout that flows through the flowmeter each time, and comprehensively judges whether there is well kick or lost circulation. happened.

Claims (5)

1. The automatic grouting control system is characterized in that it includes a grouting pump (1), a mud pump (2), a low-pressure return valve (3), a low-pressure return pipeline (4), a high-pressure valve (5), and a mud tank ( 6), function valve (7), grouting valve (8), pressure relief valve (9), grouting pipeline (10), return tank (11), wellbore (12), well sealing device (13), flow rate sensor (14 ), trumpet (15), grouting pump control cabinet (16), one-way valve (17), suspension weight sensor (18), winch (19), winch sensor (20), hydraulic tongs (21), liquid inlet port and liquid outlet (22), breakout sensor (23), make-up sensor (24), standpipe (25), stand pressure sensor (26), first pipeline (27), drilling tool (28) and cable (29), the mud pump (2) is connected to the first inlet of the mud tank (6) through the low-pressure return line (4), and the low-pressure return valve (3) is set on the low-pressure return line (4) ), the mud pump (2) is also connected to the grouting pipeline (10) through the high pressure valve (5), grouting valve (8) and pressure relief valve (9) in turn, and the mud pump (2) is also sequentially The high pressure valve (5) and function valve (7) are connected to the standpipe (25), the vertical pressure sensor (26) is set on the standpipe (25), and the grouting tank (6) is set pump (1), the grout pump (1) is connected to the grout pump control cabinet (16), the first outlet of the mud tank (6) is connected to the mud pump (2) through the first pipeline (27), The second outlet of the mud tank (6) is also connected to the wellbore (12) through the one-way valve (17) and the grouting pipeline (10) in turn. The top of the wellbore (12) has a bell mouth (15), so A flow rate sensor (14) is provided at the bell mouth (15), and a backflow tank (11) is provided under the bell mouth (15) to connect with the second inlet of the mud tank (6). The backflow tank (11) ) above the grouting pipeline (10), the wellbore (12) is provided with a sealer (13), the drawworks (19) is connected to the top of the drilling tool (28) through a cable (29), the The winch sensor (20) is set on the winch (19), the suspension load sensor (18) is set on the cable (29), and the hydraulic tongs (21) are set on the drilling tool (28), so A breakout sensor (23) and a make-up sensor (24) are provided on the liquid inlet and the liquid outlet (22) of the hydraulic tongs (21) described above. 2. The automatic grouting control system according to claim 1, characterized in that it also includes an acousto-optic indication module, and the acousto-optic indication module includes pressure relief valve (9) feedback indication, sensor status indication, overflow Alarm indication, leakage alarm indication and slurry return indication, the sound and light indication module is respectively connected with the pressure relief valve (9), flow rate sensor (14), suspension weight sensor (18), winch sensor (20), shackle sensor (23), the buckle sensor (24) and the standing pressure sensor (26) are connected. 3. The automatic grouting control system according to claim 1, characterized in that: it also includes a parameter setting module, and the parameter setting module includes grouting time setting, grouting amount setting, grouting shot number setting, grouting liquid level setting , displacement setting, travel car height setting, empty hook hanging weight setting and grouting interval setting. 4. The automatic grouting control system according to claim 1, characterized in that: the grouting pump control cabinet (16) is provided with a touch screen. 5. The automatic grouting control system according to claim 1, characterized in that: it also includes a stabilized power supply for the on-site sensor to work normally.